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File:  [LON-CAPA] / loncom / auth / lonlogin.pm
Revision 1.10: download - view: text, annotated - select for diffs
Wed Jan 17 17:27:49 2001 UTC (23 years, 4 months ago) by www
Branches: MAIN
CVS tags: stable_2001_fall, HEAD
Explicit server specification

    1: # The LearningOnline Network
    2: # Login Screen
    3: # 5/21/99,5/22,5/25,5/26,5/31,6/2,6/10,7/12,7/14,
    4: # 1/14/00,5/29,5/30,6/1,6/29,7/1,11/9,
    5: # 1/17/01 Gerd Kortemeyer
    6: #
    7: package Apache::lonlogin;
    8: 
    9: use strict;
   10: use Apache::Constants qw(:common);
   11: use Apache::File ();
   12: use Apache::lonnet();
   13: 
   14: sub handler {
   15:     my $r = shift;
   16:     $r->content_type('text/html');
   17:     $r->send_http_header;
   18:     return OK if $r->header_only;
   19: 
   20:     my $iconpath= $r->dir_config('lonIconsURL');
   21:     my $domain  = $r->dir_config('lonDefDomain');
   22:     my $role    = $r->dir_config('lonRole');
   23:     my $loadlim = $r->dir_config('lonLoadLim');
   24:     my $servadm = $r->dir_config('lonAdmEMail');
   25:     my $sysadm  = $r->dir_config('lonSysEMail');
   26:     my $lonhost = $r->dir_config('lonHostID');
   27:     my $tabdir  = $r->dir_config('lonTabDir');
   28:     my $include = $r->dir_config('lonIncludes');
   29: 
   30:     my $loadavg;
   31:    {
   32:        my $loadfile=Apache::File->new('/proc/loadavg');
   33:        $loadavg=<$loadfile>;
   34:    }
   35:     $loadavg =~ s/\s.*//g;
   36:     my $loadpercent=100*$loadavg/$loadlim;
   37: 
   38:     my $otherserver='http://'.$ENV{'SERVER_NAME'};
   39:     my $firsturl=$ENV{'request.firsturl'};
   40: # ---------------------------------------- Are we access server and overloaded?
   41:     if (($role eq 'access') && ($loadpercent>100.0)) {
   42:         $otherserver=Apache::lonnet::spareserver();
   43:     }
   44: 
   45: # -------------------------------------------------------- Set login parameters
   46: 
   47:     my @hexstr=('0','1','2','3','4','5','6','7',
   48:                 '8','9','a','b','c','d','e','f');
   49:     my $lkey='';
   50:     for (0..7) {
   51:         $lkey.=$hexstr[rand(15)];
   52:     }
   53: 
   54:     my $ukey='';
   55:     for (0..7) {
   56:         $ukey.=$hexstr[rand(15)];
   57:     }
   58: 
   59:     my $lextkey=hex($lkey);
   60:     my $uextkey=hex($ukey);
   61:     my $logtoken=Apache::lonnet::reply(
   62:        'tmpput:'.$ukey.$lkey.'&'.$firsturl,
   63:        $lonhost);
   64: 
   65: # --------------------------------------------------- Print login screen header
   66:     $r->print(<<ENDHEADER);
   67: <html>
   68: <head>
   69: <title>The LearningOnline Network with CAPA Login</title>
   70: </head>
   71: ENDHEADER
   72: # ---------------------------------------------------- Serve out DES JavaScript
   73:     {
   74: 	my $jsh=Apache::File->new($include."/londes.js");
   75:         $r->print(<$jsh>);
   76:     }
   77: # ---------------------------------------------------------- Serve rest of page
   78:     $r->print(<<ENDDOCUMENT);
   79: 
   80: <body bgcolor="#FFFFFF" text="#000000" link="#999999" vlink="#999999"
   81:  onLoad="init();">
   82: 
   83: <script language="JavaScript">
   84: 
   85:     function send() {
   86: 	this.document.server.elements.uname.value
   87:        =this.document.client.elements.uname.value;
   88: 
   89:         this.document.server.elements.udom.value
   90:        =this.document.client.elements.udom.value;
   91: 
   92:         uextkey=this.document.client.elements.uextkey.value;
   93:         lextkey=this.document.client.elements.lextkey.value;
   94:         initkeys();
   95: 
   96:         this.document.server.elements.upass.value
   97: 	    =crypted(this.document.client.elements.upass.value);
   98: 
   99:         this.document.server.submit();
  100:     }
  101: 
  102: </script>
  103: 
  104: <a href="/adm/accessibility.html">Accessibility Options</a>
  105: &nbsp;&nbsp;
  106: <a href="/adm/about.html">About LON-CAPA</a><p>
  107: <table width=600>
  108: <tr><td>
  109: <img src="$iconpath/lonlogo.gif"></td>
  110: <td colspan=2 bgcolor="#DDDDDD">
  111: <font size=+1><b>User Authentication</b></font><p>
  112: 
  113:  <form name="server" action="$otherserver/adm/authenticate" 
  114:   method="post" target="_top">
  115:   <input type=hidden name=logtoken value="$logtoken">
  116:   <input type=hidden name=serverid value="$lonhost">
  117:   <input type=hidden name=uname value="">
  118:   <input type=hidden name=upass value="">
  119:   <input type=hidden name=udom value="">
  120:  </form>
  121: 
  122:  <form name="client">
  123:  <table border=2 bgcolor="#BBBBBB">
  124:  <tr><td>Username:</td><td><input type=text size=10 name=uname></td></tr>
  125:  <tr><td>Password:</td><td><input type=password size=10 name=upass></td></tr>
  126:  <tr><td>Domain:</td><td><input type=text size=10 value=$domain name=udom></td>
  127:  </tr>
  128:  <tr><td colspan=2><input type=button value=Login onClick="send();"></td></tr>
  129:  </table>
  130:  <input type=hidden name=lextkey value="$lextkey">
  131:  <input type=hidden name=uextkey value="$uextkey">
  132:  </form>
  133: 
  134: </td>
  135: </tr><tr><td bgcolor="#DDDDDD">
  136: <table border=1 bgcolor="#BBBBBB">
  137: <tr><td><font size="-1"><b>Domain:</b></font></td>
  138:     <td><font size="-1"><tt>$domain</tt></font></td>
  139:     <td rowspan=3><font size="-1"><b>System Administration:</b><br>
  140:                   <tt>$sysadm</tt><br>
  141:                   <b>Server Administration:</b><br>
  142:                   <tt>$servadm</tt></font></td></tr>
  143: <tr><td><font size="-1"><b>Server:</b></font></td>
  144:     <td><font size="-1"><tt>$lonhost ($role)</tt></font></td></tr>
  145: <tr><td><font size="-1"><b>Load:</b></font></td>
  146:     <td><font size="-1"><tt>$loadpercent</tt> percent</font></td></tr>
  147: </table>
  148: </td><td>
  149: <font size="+1">
  150: <b>L</b>aboratory&nbsp;for<br>
  151: <b>I</b>nstructional<br>
  152: <b>T</b>echnology&nbsp;in<br>
  153: <b>E</b>ducation</td><td>
  154: <img src="$iconpath/liteani.gif"></font></td></tr></table>
  155: </body>
  156: </html>
  157: ENDDOCUMENT
  158:     return OK;
  159: } 
  160: 
  161: 1;
  162: __END__
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